package com.hxh.essaysharing.config;

import com.hxh.essaysharing.common.ApplicationVariable;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * @author 兴趣使然黄小黄
 * @version 1.0
 * @date 2023/7/22 16:48
 * 登录拦截器
 */
public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        HttpSession session = request.getSession(false);
        if (session != null && session.getAttribute(ApplicationVariable.USER_SESSION_KEY) != null) {
            // 用户已登录
            return true;
        }
        // 重定向到登录界面
        response.sendRedirect("/login.html");
        return false;
    }
}
